No access to drugs since I focused on tools and fertilizer. I played around with the Focus from Leadership to Training and the different stat boosts involved, but it still hasn't made a difference.
The chances are in %. That means, the focus adds +10 % to whatever you chose. Love, corruption OR fear.
It's the same with the base chances that are listed behind the training type. To see how they are calculated, just click one of those numbers, then a list appears. It's different for each training.
If you want to train slaves for example, in most cases "torture" is most effective. However, you have to create the conditions for it. Just get/build what gives best boni. For example for slaves via torture, alone building a prison 5 gives 20 % on fear.
In general, to train anything besides using pleasure for concubines, a higher prison level is necessary for better chances. You are at day 40 and still level 2. Focus earlier on a better prison, since it is your place of training.
Male wardens are expensive, but depending on the mission and your rng rolls, you can sell trained females you don't use at the auction. With a prison 4 or 5 and enough wardens, you will snowball way more, since you have more trained prisoners. THe focus and drug helps to add for example "love" to gangbang, or "corruption" to pleasure, or "love" to torture, which then more likely results in female wardens. Once you have one or even more, not even your prison starts to autotrain prisoners from time to time, but you will have way better results in torture and humiliation.
Same goes for scientists, female scientists are hardest to get, but it's reliable even without drug. But you need higher prison level. Once you have ONE female scientist, then you can really start to reasearch, since then you can help with research at the lab. Female scientist also add a possible research event at end of turn, which creates more research points than just with male scientists.
Some of those infos are available when you do the first mission. I will add the research related infos to mission 3, which i will add next.
EDIT: I realized you activated 2 video packs. Not sure if it is intended and you have a second one. But activating two when you only have one will result in a lot of missing clips since the game won't find any clip at the pack.