Step one punch brother in arm, Telescopes are Everyone. Theres no such thing as "not for girls".
For now makre sure the scope i set up correctly as Peter noticed. Don't be intimidated at the learning curve, you do NOT have to learn anything really, but are free to learn so much and that telescope is a great tool to begin with and serve you well for years to come. Hang on to it.
As others said, the smaller finder scope is a low magnification scope to help get the telescope pointed cloes to something you want to look at. The higher the magnification the hard it is to get a target object in the eyepiece. Eyepieces have a number and the larger the number the lower the magnification and therefore the wider the field of view. The quality of the eyepiece itself determines how clear and comfortable the view is and with your telescope they will be a limiting factor for your viewing enjoyment and you can always buy better later on if you feel you need to.
As others suggest, get the scope outside during the day, it should be easy to swing up and down and get comfortable with getting your eye to the eyepiece without knocking the scope from what its pointed at.
First try to locate something on the ground in the distance you can see with your eye, a mountain peak, a tree fork, a light on a pole, something distintive and obvious and away from the sun! Very very very important to never point it towards the sun, not even for a joke or brief instant or even if you see someone else doing it with their telescope. You can modify a telescope or buy special telescope for looking at the sun and you can learn about that later on if you like. But for now test the alignment of the big telescope tube (the OTA or Optical Tube Assembly) with the finderscope. point the telescope at something that wont move in the distance and get it centered in the eyepiece, step away and coe back to make sure its still center in the eyepiece and the OTA didn't get bumped. Now look through the finderscope is the item in dead center or just in the field somewhere or not visible (check and remove any dust caps). The finderscope should have some screws on the top/sides to push/pull it in different directions slightly and you need to keep going back to the telescope eyepiece making sure your target remains centered and slightly adjust the finderscope until the same object is centered as accurately as you can make it. With luck your dad should have done this and its already aligned but if its been bumped or removed it'll need checking. The goal is to have the same thing in the very center of the eyepiece and the finderscope. There are things called Red Dot Finders that do the same job and also something you could investigate later to add to your telescope and you do this same process to align those too.
Now at night try it out by pointing the telescope at a bright point in the sky that you can see, any one, just pick! Get it lined up in the middle of the finder scope first then look through the eyepiece and see if its there, if not move the scope around a tiny bit until you can see it, a bright star or planet in a fairly "empty" patch of sky is best to choose as its really obvious in the eyepiece if its there or not, it'll be very very bright! You should probably start with the lowest magnification eyepiece first for this (the eyepiece with the largest mm number), get the object dead center then change to a higher mag eyepiece (smaller number) and so on until the smallest is what you are looking through. hopefully as you step up in magnification the object was always in the eyepiece (meaning everything is fitting nicely). Now repeat the process of keeping the bright point dead center in the eyepiece and adjusting the finderscope until the same bright object is dead center in that too. This has fine tuned your finderscope alignment and a process you should do if you notice alignment changes or say once a year in case seasonable changes warp the scope or whatever, its a simple maintenance process. now look around the sky and find something else to look at, maybe switch back to the lowest mag eyepiece (largest number) now move the telescope to look at it and center it in the finderscope and it should be in the eyepiece too now. Anything in the night sky you can center in the finderscope should be in the eyepiece too now. give it a try trying to find a bright point with just the eyepiece alone, its tricky to do. The finderscope just help you out especially when star hopping (so many exciting things for you to find out about and explore about the night sky, planets are awesome and comet hunting very rewarding, even seeing a star as a double star!).
A big point to keep in mind, the higher the magnification (the smaller the number) of the eyepiece the harder they are to make plus the more they magnify atmospheric distortions. So you may notice and be disappointed by the viewing quality reducing the more you magnify but this is normal for everyone, unless the mirror in your telescope is badly damaged/dirty typically the viewing is limitied by upper atmospheric weather and the eyepiece. A good quality eyepiece can improve things but typically when you use an eyepiece below 10mm you start to notice the degradation in viewing quality. Its usually always best to start with the lowest magnification eyepiece first until you get something in the view you want a better look at then switch to a higher magnification.
Of course you can ignore all that and just point the scope anywhere in the night sky, pop in any eyepiece and focus and you'll see stars. Its fun just to wander around the sky and explore at your own pace.
Caution: the underside of the OTA just behind the large mirror on the bottom there should be three large finger screws. Avoid touching these at all until you've used and learnt more about telescopes. These screws are for collimation and its easy for beginners to mistake an uncooled telescope distortion as a collimation problem and put their telescope out of alignment completely by trying to adjust them. If you can try to find out about a local astronomical club you can join and take your scope along to a viewing night and you should be able to get help with giving the telescope a going over for basic adjustments and point out problem areas to help you get the best viewing pleasure from it.
Have a red light torch, notepad and pen so you can take notes. Many of us take diary notes of what we saw that viewing session, sometimes sketching things.
Your eyes adjust slowly to the dark so avoid going back indoor or using a regular torch when outside so your eyes can adjust. Ideally you want to keep your telescope indoors away from direct sunlight at all times when not in use and if you intend to use it that night, take it outside again out of sunlight about an hour before you want to use it (during astronomical dark is best, something else to look up
. This allows the telescope to "cool down" to the ambient outside air temperature, take the dust cap off and losely pop a plastic bag over the open end to allow the air inside the OTA to disperse and outside air to fill the tube. The temperature and humidity of the air inside the OTA can cause distortion to the view especially at higher magnification. So let the telescope cool down outside slowly over an hour, not on a hot cement ground where it will absorb heat. Likewise if you are viewing along a roof plane the heat from the home will be radiating into the night sky and you'll get distorted viewing looking through the air layer a metre or two above a roof.
Good luck , I hope you find it easy to get into and find interestng things to see. Especially Jupiter which right now is very very bright and spectacular to see for Australia, you'll be able to see some of its moons too easily, its politely up in our evening sky at the moment, saturn and mars are later in the night.