hello i have no idea what to really look for when i found these parts and i have no idea if they are compatible with each other could you guys tell me if im on the right track? do i need to buy anything else? do i need to buy a wireless adapter separately if i wanna hook up wireless internet?
You must have a very low budget amount to work with if you would like to share that with us we can see if there is a good build that will be compatible with what you want the Pc for. What is going to be the main function of this computer. The Biostar motherboard you listed is sold out. The power supply you listed does not come with a power cord and that is true for all earthwatts psu's. I am surprised by the cpu selection since you were going low price on everything else , you probably want to go with an i3 cpu with that build since the price will fit in with the rest of the components. If you want to go wireless then you do have to get a wireless adaptor.
HD - recognize that blue and green designate "slower than black"
Wireless - yes, desktops are not envisioned to use wireless as it provides such a substantial performance drop over hard wired connections. I'd suggest running a cable to you router.....but if ya can deal with the slower speeds, yes, you will need an adapter.
Your build seems a little unbalanced, especially if you are using it for gaming. The GPU you have selected is a low-end card, and won't play demanding titles very well. The i5 is an excellent processor for gaming, but if you ever want to overclock spend the extra $10 on the 2500K. What kind of games do you want to play?
EDIT: The combo obsidian86 linked looks like a good bet. The GPU he linked is also far superior, however it would still be helpful to know what you play so we can recommend the right card for you.