General - what's O(n), which sorting algorithms do you know, how to sort numbers, knowing that number is in the first half, difficulty of sorting from 0 to 100. Html/css - difference between outside space/inner space, box components, is it possible to add func into inline component, types of position in css, difference. Js - compare strings and numbers (==/===), what's this, function declaration/expression vs arrow func, rest/spread operators, slice vs sort, map vs find, what returns a new array, what goes through the first array, timeout vs promise who will be the 1st in the console, write a func to get middle age. Ts - interfaces, union type, turples, utility types. React - virtual dom, what's jsx for, which limitations has, is it possible to return 2 divs from a component, how to solve it, hooks. Git - pull/push, what's code review for.