Ingame many people says,
1. Explosive Projectiles Blueprint I - for basic skilling
But i think 2. Repair on any MS, give me only the skills, but you get nothing back, because you not Produce something or i thinking wrong?
the thing is with repairing on a MS you can get the skill in a day which will take you weeks with the expl bp I...
so i would definately buy some rk-5s and start skilling on MS...
you can use the explosive bp to get experience in the real crafting process, see how the condition slider works, how return works and how it works with near success etc...
the question also is what is your goal in crafting...
you have to realise that crafting can be very expensive and there are really not much options to do in that profession to get good mu return...
there are not much things to craft which really get sold and can make you keep going without loosing ped fast...
what you can do, after you got some skills to start with is craft components which are used in bigger crafts and sell those...
i think if you have some patience and some market knowledge this could work...
i would do it something like this:
study what the gamblers craft, watch the globals which fly by and check what components those carfters need..
this is a good site to check this out:
http://www.candyman.se/pe/bobthebuilder/v2/
examples could be basic sheet metal used for lvl2 amp light and lvl3 amp bps or basic sensor for lvl2 amp bp...
get your hand on those bps preferably with some quality rating on them, they are not that expensive even at qr100...you will lose more if you click them to qr100 yourself...
then do some research, check how much one click of the higher bps use of that component then find out how many clicks people usually do to know what stacks ppl will buy...
try to find out what % you need to sell the product and buy the materials to do good...
try to buy your materials as cheap as possible and sell the outcome as high as possible...wait for highs and lows on the market..sometimes the stack size needed are sold out and you can list for little higher...
BUT even for such low lvl crafting you will need good ped card sth like 1k ped would be good...
sometimes you just have to wait for stuff to sell or wait out if someone floods the market and the price crashes (that is not only important for crafting but for all professions to become succesful in this game)..