Is there a keyboard shortcut or an extension that would allow me to select a block of code? I\'d like to select everything between curly braces, between html tags, etc.
Use alt + shift + → to expand selection between braces or tags,
Use alt + shift + ← to shrink selection between braces or tags.
Here is vc shortcuts cheatsheet that might help you.
Update 2019/3: this inner functionality of vs is not working very well after some updates, alt + shift + → now selects things including braces (which annoys me), not like its behavior before, it selected things between curly braces before, when I first posted this answer. I'm using Mark's answer now. If anyone has better soulution (without extension) now, please leave a comment.