How are Ancillary Armor Repairer Blueprints seeded

While inactive, active hardeners receive a 300 basis point boost to their resistance stat, so at level 1 they will provide 3%, level 2: 6%, level 3: 9%, and so on (it seems like going from 0 to 1 only gives you a 200 bp bonus). The compensation skills do nothing while the module is active (as the skill says).

Passive hardeners (resistance plating) receive a relative 5% boost per skill level, so with T1 plating it will be a total boost of 20% * 5% = 1% per skill level.

• Time research reduces the time production runs take. I think level 20 is generally considered the sweet spot in terms of usability.

• Production efficiency reduces the amount of waste - and thus lets you produce the same amount of stuff for slightly less resources/components/etc. As with Time research, there are diminishing returns on higher levels. I think 20 is regarded as the sweet spot, but check the forums for specifics per blueprint.

• Invention is used to turn a tech 1 blueprint copy into a possible tech2 blueprint copy. This requires a lot of skills plus datacores. A succinct explanation of how the entire concept works can be found here.

• Reverse engineering is used with relics and artifacts found in archaeology sites, and can be used to develop specially modified hardware, as well as being crucial for tech3 ships.

• The reason publicly available slots tend to be full is because, well, they're publicly available -- and there are a LOT of pilots. Best bet is to join a player corp with their own stations and a research division.

• EDIT: This link on the forums has a lot of good articles to sort out what's what with inventions and industry in general, and this link in particular has pretty much everything you want to know about research in specific