In Hobo Simulator, you have several Skills, which you can improve over the time. Each Skill is associated to a specific Career. This means, when you improve this skill, you will receive a higher income in this career.
When you improve the Skill 'Making Music' your income for the Career 'Rockstar' will be improved by 1.4% per Skill-Point. Also, this skill has an effect on the Street Musician.
You can improve the 'Making Music'-Skill also by working as a Street Musician. You get 0.5 Skill-Points each time you work.
The Skill Agility has a direct impact on your income in the career 'Athlete'. The Improvement is at 1.1% per Skill-Point.
You can improve the 'Agility'-Skill also by collecting bottles in the city center. You get 0.5 Skill-Points each time you do this.
Gambling is the only Skill, which does not improve your income in a specific Career. Gambling improves your overall income for everything by 2% per Skill-Level.
To buy the upgrades is the only way to improve this skill.
This Skill is related to the Career 'Scientist'. You will improve your income by 1.2% per Skill-Point.
The Skill 'Intelligence' can also be improved, when you collect bottles in the club (1 Skill-Point), before a rock concert (1 Skill-Point) or on a festival (2 Skill-Points). But not when you collect bottles in the inner city.
With Charisma, you improve your Income for the Career 'Politician'. You will get 1.2% more Income per acquired Skill-Point.
Charisma can also be improved, when you sell Newspaper on the Street. You will get 0.5 Skill-Points per sold Newspaper.
Speaking is associated to the Career 'CEO'. You will improve your Income by 0.9% per Skill-Level.
You can Improve this Skill by 0.5%, when you beg for money on the street.