chessboxin asked: How do you inflect for comparative and superlative form (i.e. good, better, best)? Is there any pattern or is it a lot of guesswork like noun gender?

Usually the suffix -er is added to the adjective/adverb in the comparative. e.g. klein - kleinER (small - smaller); laut - lautER (loud - louder)

For the superlative you add -(e)ste. e.g. klein - der/die/das kleinSTE (small - the smallest); laut - der/die/das lautESTE (loud - the loudest)

An important difference to English is, that German doesn’t use “more” to form a comparative. That’s a mistake that is made very often - e.g. more beautiful = schönER and NOT “mehr schön”.

Those were the basic rules. However, there are exceptions - like always ;) I’ll post a list with those irregular adjectives/adverbs soon :)