Thought I would share my biggest one. I started down the path to this hobby about two or so months ago with the purchase of a Sharper Image DX-2 stunt drone. I was curious on if and how to work on, modify or improve it, so I took it to my local RC hobby shop to ask questions - first rookie mistake. They had the fly it til it's dead, then get a better one mentality, made a quip about if it could even fly, then I was left to wander the shop. During my wanderings, I got talking to a guy that was there who helped by pointing out better options to look into, gave me some options, then he left. When I left the guy I talked with was outside smoking and we struck up a conversation again and his tone changed as he was freer to speak his mind giving me more pieces of information and opinions. We exchanged numbers and a few days later he made a killer offer $250 for a moded Spektrum DX 6, Inductrix Pro, charging board and batteries. I didn't have that kind of money off the bat and thought taxes would be a good means to get it, then learned that would not be an option. I know now that this would have been useless because I didn't have a charging system, which he didn't clarify - Almost a rookie mistake. So when I told him that I wasn't able to afford that at the time, he pointed me in the direction of the CX-30W. He sent me a link to a local and reputable company, Buddy RC and I did a search and found it cheaper, via Walmart Marketplace. I bought the drone, got the wrong thing and fought for a refund but did get to keep the drone, but no tx, only phone piloting. The next rookie mistake came when I planned to back off from the hobby and got talked into buying another "great deal" from the guy in the way of a stripped down DIY quad for $25, needing a receiver and flight control.....oh and a transmitter. That fired me back up and then we got onto the topic of needs, in order. Tx, Charging station, batteries, drone. Let me briefly explain this guy, he and his wife make good money, and it shows in his extensive hanger, the ability to order things whenever he wants, without a second thought, and opts for higher end gear so that he doesn't have to worry about it going bad as quickly (which I understand and agree with.) Me on the other hand? Shoestring budget and saving up as well as selling off old hobby items collecting dust and items made from another to get me off the ground in this one. I decided, after much thought, that I needed to take a step back and slow down. So I purchased another CX30 (with tx this time), Freerider FPV and told the guy I was taking a step back so I can work my way up to better things. He called me short-sighted, making all the typical rookie mistakes and that I should just cancel the order and quit while I was ahead. When I explained to him my plan, he told me "good luck with that" and I haven't talked to him since. Last night it hit me, that for all this guy's biggus dickus syndrome with how he was showing off to the new guy, he never once took the time to tell me anything really important a newbie NEEDS to know at the start, such as safety with lipo batteries (his setup is not following any safety guidelines.) I am learning these things from Youtube and websites. And this was my biggest rookie mistake, thinking that this guy was telling me what I needed to know. Fortunate for me that I am an inquisitive person and in my quest to learn (not just buy and fly out the box type) I am learning those important things early before they become future mistakes.