Text: this is not something that happens by itself, it requires systematic research on a high professional level.

Correct capitalization: This is not something that happens by itself, it requires systematic research on a high professional level.

Text: the inviting ambience tempts you to take a seat, as the absence of shops makes this area both peaceful and relatively unknown.

Correct capitalization: The inviting ambience tempts you to take a seat, as the absence of shops makes this area both peaceful and relatively unknown.

Text: several of us have known each other for many years.

Correct capitalization: Several of us have known each other for many years.

Text: 'rules': the game rules can be viewed by clicking on the 'pay table' button on the bottom left of the screen, then 'rules' button on 'pay table' screen.

Correct capitalization:
'RULES': The game rules can be viewed by clicking on the 'PAY TABLE' button on the bottom left of the screen, then 'RULES' button on 'PAY TABLE' screen.