Laranity on YouTube has some fantastic tips like this on the "things you probably don't know" videos that she occasionally does.

One that lots of people probably already knew but that I learned of within the past year or so is that if you're moving things from your inventory to a stack of that item in your bank (not material storage...if they go there, use the drop down menu to send them), that you don't have to find the item stack in your bank.

Just double click the stack in the inventory side of the bank dialog (not in your actual inventory window), and it'll automatically stack them on top of an existing stack of that item in your bank.

You can always rightclick most of the chests popping up on the right side of your HUD to open them faster.

When you're fighting a world boss, significant champion, or any enemy that is an event unto itself (read: has an event with a skull symbol, and is the main target of the event), you can click on its orange health bar in the sidebar to target that enemy.

This can be very useful in chaotic fights with lots of mobs running around, when hitting tab might guess wrong a dozen times before putting you back on the main one, and there's too much visual clutter to get a good targeting click on the mob itself.

I will post a couple links I use regularly. If you are not sure you have something somewhere on your account add your API key to this site and help find it under "Account" gw2efficiency.com Also if you want to craft something but don't know the steps or how much you need use the crafting tab. The site is a pretty amazing tool. Need to level up your crafting? gw2crafts.net will give you 2 options, the most cost effective and the fastest way. Just make sure to save the link in the page because it's timestamps as the trading post values may change. Speaking of the trading post. gw2tp.com will tell you prices of past items. Not sure you want to sell your materials, equipment, or even In Game Event loot chests? Check the history on it. Need to earn some gold? Here is a site with great links to park alts, what events pay the most gold per hour versus per run, and other basics including some farming builds. https://fast.farming-community.eu/ Need a build? Metabattle.com has a ton. But most importantly do what you love.

You can see boss event timers from the wiki and there are links to each: https://wiki.guildwars2.com/wiki/Event_timers

Or you can use https://gw2timer.com/ which shows a map of where they are.

The game is designed in such a way, that you can NOT make big mistakes before lvl 80, yet always make progress on something. So take your time, go an adventure, figure things out on your own. This extends to character creation, play whatever class, you want, all of them are good and have multiple, endgame viable, builds.

If unsure about anything, use the phenomenal wiki, ask IG or on the forums. ("/wiki" +[shiftclick an item] in IG chat opens the wiki site for the item)

The PvP lobby (crossed swords top left) has basic vendors, TP access and a bank. Use it to save afk, buy/store/sell things.

Do NOT use the lvl 80 boost on your first character.

As long as you and your friends are on the same Mega Server (EU or NA) you can play together, you have all race starter Waypoints unlocked.

Inventory management is one of the most important things in the game. Here is a rough prio list for loot:

1. Use the "Deposit All Materials" button top right in the inventory. You can access them from all Banks or Crafting stations.
2. Type "Consumable" into the search bar of the inventory, to find things you can consume (open all bags, consume all luck, karma etc)
3. Right clicking any item brings more options.
4. Identify or sell unidentified Gear on the TP. ->If you identify: salvage all white, blue and greens. For yellow and orange check TP value, if value is over 25 silver (2x Ectoplasm) sell, else salvage.
5. Selling to a npc vendor: use the "Sell Junk" button
6. Last possible option is to destroy things

Also take a look at the sidebar. It has some resources as well.

The red line that appears sometimes below your skills? That's an indicator that whatever you have targeted is out of range of that skill.