1) You must complete the mission "Assmiliated" and the 3 Borg STFs (Infected, The Cure, Khitomer Accords). Each has one piece of borg equipment that you can add.
2) Assuming you are Rear Admiral or Vice Admiral - it's about learning a bit more about the combat system and how to optimize your build.
a) Run high weapon power.
b) Equip yourself with decent equipment (Mark X or higher, it doesn't even have to be green, blue or purple)
c) Hazard Emitters negates the shield neutralizer, Tactical Team Borg Boarding parties (the part where your cooldowns jump around, that's the boarding parties. Never invite Borg to your parties)
d) Know how to increase your damage output with various buffs (which ones depend on the ship you use and the class you play). Bridge Officer Power wise: Good weapon damage buffs are Cannon Rapid Fire, Attack Pattern Beta and Omega, Beam Overload, Beam Fire At Will, High Yield Torpedo (obviously you need to pick powers appropriate to your weapon choice). Good other damage sources are Charged Particle Burst, Gravity Well, Tyken's Rift, Eject Warp Plasma.
e) Train skills that fit to the Bridge Officer powers you use, and equip the right consoles and deflectors as well.
f) Don't run mixed energy weapon builds. It's not cost-effective.
g) Look into how you can increase your ship's endurance. This means not just to have some heals, but it also to have proactive ablities - things that give you hull or shield resistances. 2 Emergency Power to Shields can go a long way to make any ship endure a lot of damage (but keep in mind that the Borg shield neutralizer can ... neuter ... this.)
There are a few fleets around the forums that will be more than happy to help you get through those STFs and get you your shiny Borg gear. Just search around for a bit, and I am sure you will find several threads from these fleets.
If you have no luck there, send me a tell in game. My friends and I will be happy to help you out.
Yeah I just realised I have done Assimilated! Its the STF's I got caught up on.
I will have a look around, thanks very much
What sort of ships are the best to use? Tough question I imagine. I am used to using Cruisers but I have started using an escort recently which doesnt last too long in battle but packs a punch...
Every ship and every class works, but there are good and bad builds and you have to figure out which is which. Experimentation and asking for some more specific advice on the forums both can help.
For example, as a minimum we will have to know what career you picked (Engineer, Science, Tactical?) and what ship you picked (e.g. Assault Cruiser or Fleet Escort).
It might also help to know what kind of abilities you currently use, and what kind of equipment you have.