Good advice from Alexander, stick to low powers except on bright stuff like Moon and planets. And as he said, 'seeing' will be very important. All planets look like mush at high powers if there's atmospheric turbulence (check for twinkling stars) and you won't be able to focus properly. You might only get a few nights of excellent seeing a year depending on your location, but boy are they worth it!!
Case in point tonight - I live in a very bad place for seeing, and I wandered out earlier and noticed the stars were unusually steady. I set the scope up, let it cool for 15 mins, then trained it on Mars, with 8mm eyepiece & 2x Barlow (225x). The planet was still bobbling a bit (and of course still tiny in the field of view), but in moments of clarity I could see the polar ice cap, and a large wedge of darker area. Believe it or not, that's the first time I've ever seen features on Mars from my place - it's always just been a pulsating, unfocusable blob! Features on Jupiter & Saturn are easier to see, but still require practise. Things like the Great Red Spot are pretty low contrast.
When the stars are twinkling, go for deep sky stuff, and there's plenty to see through your scope (I basically use the same - 114x900 Tasco brand). Dark skies really help at our aperture if you're chasing faint fuzzies. If you live in a light-polluted area, a little drive out to darker areas might be helpful if you're chasing faint fuzzies (planets & Moon are observable anywhere though). A decent set of eyepieces help, but there's no need to go overboard. I pretty much use just a 21mm for viewing, which gives me 47x. Then I have an 8mm (112x) which I rarely use, and ditto for the 2x Barlow. Our smaller scopes are a little more forgiving on collimation than the larger ones, but you should check and adjust it as soon as you can.
Anyway, good luck with it Grant, don't forget to submit an observation report (or two)!
Cheers -