you should spend some time going through the tutorials , some of them are quite good mate , unfortunatley the people on here that know how to make theyre own mods and hacks are not all that nice to others and dont like to share
very untrue i learned how to make trainers and other stuff from members of XPG as other members have said be more specific of the mods your interested in
try being more specific i have rgh and joined xpg to learn how to make trainers mate no one knows what you have or what you want to know there is ueb modding , xex hex editing , game save modding , trainers , the list goes on
i learned to make trainers here also mate i didnt say they were all bad people there are some who will give you help and support if you ask the right questions do you have a jtag or rgh online mate if not very doubtfull
tbh it will be hard to find someone that will help you with online modding even though online mods are allowed on xpg alot of members don't support them
you would be better of posting in gta v forum and trying to get in a lobby for money or if you want rank up try boosting , there is no usb mods for online at present that i know of , online modding requires rgh or jtag mate
with a unbanned kv and xbls which will set you back another $40 on top of buying a rgh which won't last long (kv +xbls)