OK, I’ve enjoyed learning a little more myself on selecting the right eye piece. Here are some Basic Utube links that might help you better understand the basic concepts. The other Link may be a little to in-depth however, just take on board what you can understand for now, and keep the rest for later.
Without really understanding the Basics, you really can’t make an informed decision.
My take on it is to know what you telescope is good for looking at. The Focal Ratio (F/R) of your scope is F6…The higher the number that slower it is & the lower the number the faster it is. Not important to understand why just yet. The recommended Focal Ratio for viewing planets is around F9 and more suited to Refractors which your scope is not. Don’t get me wrong…you will still be excited seeing Jupiter and it’s moons, but to do so at your scopes optimal level you will have to be more selective with your eye piece & careful not to choose an EP that gives a to high Magnification as it’s more suited to Medium to Low powers. Just give the Links I have provided a going over and you will slowly understand the basic concept.
You should have a range of EPs that cover High/Medium & Low Powers…Some advice on choosing this range is given at those links. It’s for this reason again, I decided to get more budget EP’s rather than expensive ones to start with. The quality of the mirror in your telescope will also play a factor as well as collimation…collimation is critical when viewing at high mag…Given all this, you may very well be better to wait and see how you go with what you got, before spending $100.00 + on a single ep, or just buy a range of Budget - but effective plossels to learn with.
Best I can explain it…here are those links so that you may get a better grip on the topic:
http://www.actonastro.com/eyepieces.htm
http://www.wonderhowto.com/how-to/vi...escope-192365/
http://www.youtube.com/watch?v=wH2FbKy8zWE