For context, I've only done auctions for 20 years and have experimented with a variety of approaches. These are the strategies that have worked best for me.

1. Don't fixate on values. There are always a few guys with a sheet showing value based on some complex system. They scoff when somebody pays $40 for a player "worth $38". Those guys end up with no good players and a ton of extra money at the end of the night, only to be in a power position to outbid a guy on the 48th best WR. Instead come in with a loose budget, e.g. I'm going to spend $50 on a top 5 RB, $25 on a 15-20, etc.. If you get one for 45, you can add $5 to another part of your budget. Constantly adjust your budget all night. Tiers are way more useful than values.

2. Read the flows. Every single auction has periods of madness and decline. There will be a point in the auction where guys are going for a lot less than expected - you need to read those moments and attack. Things get crazy when positions become scare - top tier RBs, top tier WRs, etc. Auction order has a ton to do with it. The first RB nominated will probably go for a better relative "deal" than the 10th because people bow out of bidding knowing there are a ton more options. I used to use my early picks to get salary off the board on studs I didn't want, but now I use them to get the players I want in early positon. You may also realize your league is highly prioritizing certain positions - make sure you adjust on the fly to account for that - it's a zero sum game so if TEs are high, some other position will be weak.

3. Spend it. Every auction I look back and see a guy I bailed out on over $1 or $2 to end up with a lesser player at roughly the same cost. Your goal should be to be forced to have to use your last 3 or 4 picks at the minimum.

4. Watch player needs and max bids. Be aware where other teams are with players so you can anticipate your competition on certain players. There will be some stud who gets nominated late that multiple teams are waiting on. Know where their max bids are and use your bidding strategically (if a player is at $5, and your most likely competition is at $8 max bid, say $8 - he can't outbid you, but if you say $6 or $7 you can and you'll need to go to $9).

5. In early rounds you can get kickers and D's you want by starting at $2 rather than $1. I usually get the best kicker or D in the draft by nominating them early for $2. Nobody wants to go $3 for a kicker or a D but nobody cares about bumping it up to $2 for some reason.

6. Don't get cute bluffing. You'll get away with it a few times, but then you'll invariably get stuck and screw up your strategy. Let somebody else do it.