Train Logistics to 1 to get the Type-I suit. Use an Assault Rifle and grab 2 Shield Extenders (militia works fine), Armor Plate + Repairer (2 or repairers). For equipment, choose 3 between Droplink, Nanohive, Nano injectors, and Repair Tool. That is what I did however I only started a week ago.

Keep in mind that uplinks take an annoyingly high amount of PG/CPU

A hundred and one other threads already discussing this... Simple response to try to help though, other than advising you try searching around next time:

Basics:
Get the level 1 Logistics suit ASAP (2 low, 2 high, 3 equipment)
Get a gun you're good with and sit on the Militia version of it, or level 1. You don't need to be worrying about your own gunplay but should still be able to backup team members in a firefight and help reviving/repairing once the dust settles.

Low Slots: Armor Rep & Shield Regulator (These rebuild your armor and recharge your shield faster once you're out of combat)
High Slots: Shield Extender and/or Shield Recharger (Obviously increases your shields while the second lets you recharge a higher percentage of shield)
Your modules should be focused to the point to aide your own personal survival level in combat. You can't help your buddies if you're dead, and it's rare for an assault to drop out of a firefight to pick you up, even if you've been doing the same for him all day long.

Equipment: Nanite Injector and Repair Tool, always, especially if you're just starting so you can get used to having the two tools and shifting between them rapidly... Third slots should be Nanohive or Uplink to either resupply or give your team a forward spawn position.

For play, get in a squad, and follow them around. Don't let them fight their own fights, back them up, but maintain the mentality of keeping them alive over getting your own kills. You'll all do a lot better in the end.