Can someone give me adivice on how/where to get back into star trek?

As a kid i loved watching the next generation and deep space 9 with my dad. Ive always liked sci fi, more of a (stargate fan) and wanted to get back into star trek, but Im just so lost on timelines and whats going on. There are like 6 kirks and I have no idea how/where to get started with watching this again.