Improvement Points

In the vanilla Cyberpunk 2020 system, there are no experience points, no leveling up.  Instead, players earn Improvement Points (IP) on their skills as they use them, and even that, very slowly.  The book gives a few guidelines on how to distribute IP, which have been modified and expanded for this game and world.
This document outlines the IP distribution rules for the Cyberpunk Milan game world.

IP Earned During Gameplay

During game sessions, the GM keeps a tally of skill checks made and their results.  At the end of each session, these are tallied up using a formula, and the results are awarded to the player.  

The formula used to calculate IP is as follows (all points additive):

• Successful Check: +1 IP. If the check only failed because it tied the DV and the defender won, they also get +1.
• Difficulty Bonus: Difficult (DV 20-24): +1. Very Difficult (DV 25-29): +2. Nearly Impossible (DV 30+): +3.
• Critical Success: +1.
• Fumble (Critical Failure): +1. (We learn from our mistakes, especially the Really Embarrassing Ones.)
• Too Easy:  If the check DC is less than the person’s base check bonus (i.e., if they could not have failed without a fumble) then they cannot earn any IP except if they DO fumble. (We don’t learn from things that aren’t challenging.)
• Creativity Bonus:  +1 extra for the super clever use of a skill check. These points don’t count against the 6 point limit.

Add all of the results of each check made for that skill together.  If the result is higher than 6, cap it off at 6 (except for Creativity points.)  Repeat for each skill used by each character.

IP Earned During Downtime

Characters can use their downtime between sessions to pursue hobbies or train new skills, both of which can result in IP gains.
In general, downtime IP is measured in terms of weeks.  A person can learn/train once a day, and teach once a day, and only a max of 5 days each week may have IP generated.  (People need rest!)

The following are ways IP is earned during downtime:

• Solo Study/Practice: Requires access to materials, focus, and time. 1 day of study/practice (at least 2 hours) equals 1 IP. Can only get you up to Rank 2, can't go any higher.
• Partner Practice/Training:  Two or more characters training together can learn more than those studying solo, but partner practice only works with skills for which such practice makes sense (Ref's judgement.)  1 day of partner practice (at least 1 hour) equals 1 IP, and can take you up to Rank 7.  However, if your partner is 3 or more ranks below you in skill, then you do not earn any IP, though they still do.
• Lessons: Requires a teacher, which can be another party member or an NPC, either paid or as a friend. 1 IP per hour of lesson, up to a max of 2 per day, with an extra +1 if the teacher passes a DV 15 Teaching check (which does also count for IP, by the way.) Teacher can only teach up to the average of their ranks in the skill being taught and their Teaching ranks.

Stat Improvement

In vanilla CP 2020, there is no way to increase stats without cybernetics or surgery.  This rule allows players who really want to increase their stats naturally to do so - if they put in the time and effort.
It is possible to earn increases to your stats by practicing or training, however, it takes a LONG time. You can gain no more than +2 to any stat in this way, you cannot improve your base stat (not counting cybernetics or surgical enhancements) beyond 10, and ATTR/LUCK cannot be improved this way at all.
Unlike with skills, you must be working on a stat consistently (at least 3x per week) in order for the points to stick. Weeks with 1 or 2 sessions result in no change, and 1d6 IP are lost for each week that is entirely skipped.
IP for stats is not generated in-game; it is only generated during downtime.  Solo and partner practice can only be used for the first +1 bonus - beyond that the only way to improve is a coach.
Teachers can coach you to improve your stats beyond their own, but they must make some kind of knowledge check and some kind of teaching check in order to do so. (i.e., a strength coach does not need to have a higher BODY than you in order to help you improve your own, but they do have to know what they are doing.)
It takes IP 30x your current Stat to give you a +1 bonus, and 60x your current stat to give you another +1. Permanent modifiers from cybernetics/surgery count towards this calculation, even though they don’t count towards the score limitation of 10.

Other IP House Rules

Combat Sense

IP earned towards Awareness also counts towards Combat Sense.  This is because Combat Sense is never rolled on its own and thus would never earn IP otherwise.

Non-IP Abilities

Family, Authority, Resources, Credibility and other Special Abilities that are not rolled are not increased via IP.  Instead, after character creation these are changed based on the events in the character's story.