A quick "looking for help with ___ hero point at ___ location" is usually pretty successful. I don't remember how the hero points at the beginning are, but I can think of a few hero points in the expansions that should always be approached with a group -- they're just darn hard. There's a reason it's a MMORPG instead of a single player RPG :D
Leveling to 80 gives you enough Hero Points to unlock everything except elite specs. Extra Hero Points are only earned from Hero Challenges (in the current maps or HoT maps) or the new WvW rank up I believe, so you can't just consume tomes on a level 80 character to get all the points needed.
Yeah, it's a little much. Perhaps they'll introduce some other ways to gain hero points (via LS3, open world, something) - it's a little out of character to have to do ~80% (per u/tertle's math) of the skill challenges of the current open world simply to gain access to a trait line.
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gw2 hero points after 80