How do you pick good online courses?

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: This might be slightly off-topic :) : : Just a few days ago I came across a site https://tools.veryuseful.website/ : : They’ve collected: : - online libraries (like "Óêðà¿íñüêà ˳òåðàòóðà"), : - free courses via Prometheus, : - Duolingo for learning Ukrainian, : - information about schools and universities. : : Perfect for self-education in Ukrainian. : : Also found an awesome Ukrainian learning platform — maybe worth checking! : : How do you boost your education?

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