Posted on behalf of Tizoc:

Essential tools for getting the best deals on games during this sale
Enhanced Steam extension offers various useful options such as showing which website has a game cheapest at, and can arrange your wishlist to show what games have discounts, among many other useful functions.
Idle Master for getting cards faster to sell and make some quick Gaben Dollars .
IsThereAnyDeal is a useful website to view price histories and find the cheapest current price.
Frequently Ignored Answers
There are no longer Dailies, Flash Sales or Community's Choice polls. Each game's page will state when their discount ends. As such to get the best deal possible best to wait until the last day and buy a game you want, just in case it becomes cheaper elsewhere during the sale. You can use Steam Refunds to refund a game, but make sure to read the FAQ linked for criteria for refunding a game. General rule of thumb is that if the game is not played for more than 2 hours and for the purchase of said game to have been in under 2 weeks, then it can be refunded.
Use ModBot to make giveaways of Steam games or any other form of digital code that you have. Just be wary of the regional restrictions on gifting mentioned here.
You do not need to post your haul here. Someone will make a dedicated thread as the sale draws to a close.
The sale ends in:

Essential tools for getting the best deals on games during this sale
Enhanced Steam extension offers various useful options such as showing which website has a game cheapest at, and can arrange your wishlist to show what games have discounts, among many other useful functions.
Idle Master for getting cards faster to sell and make some quick Gaben Dollars .
IsThereAnyDeal is a useful website to view price histories and find the cheapest current price.
Frequently Ignored Answers
There are no longer Dailies, Flash Sales or Community's Choice polls. Each game's page will state when their discount ends. As such to get the best deal possible best to wait until the last day and buy a game you want, just in case it becomes cheaper elsewhere during the sale. You can use Steam Refunds to refund a game, but make sure to read the FAQ linked for criteria for refunding a game. General rule of thumb is that if the game is not played for more than 2 hours and for the purchase of said game to have been in under 2 weeks, then it can be refunded.
Use ModBot to make giveaways of Steam games or any other form of digital code that you have. Just be wary of the regional restrictions on gifting mentioned here.
You do not need to post your haul here. Someone will make a dedicated thread as the sale draws to a close.
The sale ends in:
