[atmosx]

Depends on the job, but algorithms and stuff in the real world are highly technical matters and rarely successful companies will put youngsters against them.

The best way to make a good impression is to learn their stack and be familiar with their tools.

For example, if they use 'Docker' try to get familiar with Docker. If they use git, rails, MySQL and Redis try to familiarize yourself with basic concepts. Try to create a similar setup and re-create the environment at home, etc. Play with it, try to read a few tutorials about it, learn the slang quickly.

However, don't be afraid to ask. Do your homework and when not sure ask, the more specific the question, the better. Especially in the beginning asking (even stupid questions) could save your day.