Hello, Stav, glad you made the decision. It's a great time to be building scale models. The selection of kits, the quality of kits, and the amazing amount of modeling supplies will keep you enjoying the hobby all your days. Like others have said, just buy the paints your kit calls for. Since this is your first effort, I suggest that you keep it simple. Just try to build your plane well and take your time on the painting. I suggest not trying to get fancy with weathering and all the other stuff till you have this model under your belt. Finishing is the most important goal for you right now. 1. Be aware that most paints nowadays are acrylic, or water-based paints. The days of the old oil-based paints are quickly fading. I suggest that you just accept that fact and learn to paint with acrylics. Since you're going to use a brush rather than airbrush, I suggest that you stay away from Tamiya paints. They can be very hard to hand brush over large surfaces. Model Master acrylics would be better, and easy to find. If you have access to a decent hobby store or are willing to buy over the internet, you could also get Vallejo paint. It hand brushes very well. Probably, your kit will name some paint brand selections. Sometimes, they are hard to find. There are plenty of guys here who can tell you what colors you need in the brand of your choice that will come close enough to matching the recommended colors. Don't get bogged down in trying to be perfectly historically accurate with colors. Close enough is good enough, for now. 2. Only prime the surfaces you are going to paint. I suggest that you wash the plastic with some soapy water first to help remove any mold-release chemical still on the plastic. I actually wipe pieces down with alcohol to be sure, but that is overkill most of the time. You don't need a thick coat of primer. 3. If you have a Michael's or Hobby Lobby nearby, just go to their paint brush section and buy a few medium price paint brushes for acrylic paints, or oil-based if you decide to go that way.
Remember, perfection is a journey, not a destination. It will always be elusive. Take your time and have fun, and you'll do this the rest of your life. Happy modeling. Barrett