Some good advice but some I respectfully disagree with. Your first question should be "what's the dosage?". Then you can figure out how much to take based on your tolerance level/time since you last partook. 5 mg. does nothing to me. 10 mg. does very little. 15 mg. starts to generate a "high". 20 mg. and I usually have a full on high.
I completely agree with 706Dawg86 - edible high is very different from smoking high. It is best to have a butt landing spot nearby if you are doing edibles.
On the subject of legalization, I think we are about to enter a time period of multi state legalization done rapidly. Covid has destroyed state tax revenue. States need it replaced quickly. Legalization offers them a steady revenue stream.