Welcome to the forums! Check out the gear forum and also the gear link at the top of the page. I bet you'll find some answers. If you have questions about a particular product, ask in the gear forum. Have fun shopping!
The "beautiful" Dubai DZ won't be available to the OP for a little while, unless they really smash out the jumps
That said, the desert DZ is awesome in its own right. We just spent the last week training there and it's a brilliant place (also blessed with what appears to be quite a nice gear shop, for when you decide what you want).
Welcome to SD2, I love this DZ. But also one of the lucky ones that has done all my jumping and training here. As for gear , just be patient on the big ticket stuff. But as for helmet I would suggest cookie fuel I have one and it's great ! If you want to jump together some time let me know i, all the best cheers!