Starting out, you'd probably be fine getting a set of Dynamite tools at your local RC shop or online...A-Main Hobbies, Tower Hobbies, eBay... they're good enough to get going with. The nut drivers are fine, I still use my originals. The hex drivers will wear out. But by then you'll know which ones you need, and you can buy individual GOOD ones. You can get a set of hex drivers for $15-20 from Dynamite, but pay $15 for one MIP hex driver.

I'd suggest changing any and all Phillips screws to hex, if your car isn't metric hex already.

For general lubing of chassis bits like rod ends, ball cups, and other stuff that is going to get dirty, you want to use a dry lube like O'Donnell O'lube. Leaves a lube that won't attract and keep dust and dirt.

For bearings, you want a bearing lube. SIN lube is one. The standard Boca rubber sealed bearings will do you just fine. Getting the rubber sealed ones allows you to remove the seals and clean the bearing, then pop the seals back in. Check for smoothness and reinstall.