Hi Gabriel, seem as no one else has replied I thought I'd give it a go, mind you I'm know where near as cleaver as some of the guys on this forum. Back to you conversion.
I think you need to work out what range you need
Then what speed you need to do, around town or highway
And how much money you have available
And what car you want to convert.
Once you have these answers then you can start.
There are books available but most seem to be from the 80's or 90's so may not be to useful.
The internet is great for getting info and buying books, and parts.
There are quite a few forums and web sites
http://www.evconvert.com/tools/evcalc/
http://www.diyelectriccar.com/
Joining the AEVA will also help and there is a branch in Adelaide.
I think a few of the guys on this forum have 'calculators' for working out what size motor, batteries etc that you will need for your car
so hopefully they will help with this for you.
Good luck