When I first started playing, the ref used something he called DNA training. It involved getting an injection and spending some time in some sort of machine. Then you rolled a die. 1 = you are unable to benefit from this training, 2 - 5 = level 1 in skill being trained (before level 0 concept was introduced),6 = level 2. You could only try any skill once by this method and there was an overall limit as to how many times you could use this method. I don't remember any other details. (He used it to give our party members, who were all beginners, needed skills to operate our ship.
To codify it, I would say TL 13 minimum, requires 8 hours of machine induced "sleep". 1 = no benefit. 2 or 3 = level 0, 4 or 5 = level 1, 6 = level 2. # of times it can be used = D6
(DMs -1 if first attempt roll = 1, 1- if endurance < 7, +1 if roll is 6, +1 if endurance = 10+, +1 if TL =15; giving a range of 1 to 9). Cost and avaliability - referee's call.