Originally posted by niko:

how do i get loads of xp
by doing this

How to level up your Steam account:

• Complete your community badge.
  
• Buy trading cards from the community market to craft badges.
  
• Get the "Seasonal Badge" from the points shop.

Steam Levels and XP (FAQ)

The fastest way is to buy/earn trading cards and craft badges.

You can also:

• Complete the tasks for the Community Badge.
• Spend your Steam Points on the Seasonal Badge.

Here's the FAQ for Steam Levels and XP.

what is that "community badge?

.

Originally posted by AgentIsa:

what is that "community badge?

You have to complete various Steam Community tasks to level up the badge.

The tasks are:

• Add a friend to your friends list
• Add a game to your wishlist
• Add a phone number to your account
• Comment on a friend's profile
• Comment on a friend's screenshot
• Craft a game badge
• Enable Steam Guard on your Steam account
• Feature a badge on your profile
• Join a group
• Make a trade
• Play a game
• Post a screenshot
• Post a status to your friends
• Post a video
• Rate an item on the Workshop
• Rate up content in your Activity Feed
• Review a game
• Search the Steam Discussions
• Set a profile background
• Set an avatar on your Community profile
• Set your real name on your Community profile
• Subscribe to an item in the Steam Workshop
• Try out the Community Market
• Use a Steam Emoticon in chat
• Use the Steam Mobile App for two-factor authentication
• Use the Store Discovery Queue
• View a broadcast
• View a guide in the Steam Overlay

Originally posted by Frogstophe:

The tasks are:

You forgot some !

• Post nonsense in the Steam Discussions
• Create a useless spam guide
• Advertise a scam site with your user name


Edit: I'm just kidding, of course!