A warning on backup phrases: It is absolutely crucial if you’re into this seriously to WRITE DOWN ON PAPER the sequence of words, write it down properly, and check it rather twice than once. NEVER EVER store it on a cloud drive, as a file on your computer, or even worse as a screenshot/photo on your mobile. Store it in a safe place where you and anyone you deem to be a trustworthy person knows. Don’t leave it on your desk, don’t leave it in the kids room, as there are many horror stories of people who lost money because of this.

Sell walls: the action of artificially keeping the price of a cryptocurrency asset low by placing a large sell order. Large financial operators or investors (nicknamed « whales ») may want to artificially keep the price of a cryptocurrency low so that they can keep accumulating quietly, without causing a sharp rise in price. These are called « walls » because on exchanges, the graphics showing offer and demand will show a very high « wall » on the offer size. The mechanism is that the investor will put a very large sell order (usually 100 to 1000 times more cryptocurrency units than regular orders). Because of how exchanges operate, the sell will only take place if there is sufficient demand to fulfil the entire order, so smaller operators who have a real need/urge to sell would have to sell below that wall (i.e. cheaper) to make sure they can get paid. This will cause a condition where the price will stagnate, allowing those whales to put as much smaller buy orders as they need. Sell walls may be removed once the buying whales have reached their objectives.
Warning: Only invest in cryptocurrency what you can afford to lose! Be prepared to lose everything. Expect high fluctuations. Do not put in there money that is vital for you whether it is paying for rent, utilities, loans, mortgages or necessary goods (food & medicines). See this as spending money on collaterals or nice to have: restaurant, books, travelling, cinema etc.
Like with the real world market, investing in a highly volatile market is a risky approach that can make you extremely rich or bring you to your knees. Besides the common sense approach to invest moderately (to limit the exposure of your other savings and personal finance needs), it is also recommended to spread the risk of investing in a volatile market amongst multiple assets.
Why I’m buying: Spell out what you find attractive about the company and the opportunity you see for the future. What are your expectations? What metrics matter most and what milestones will you use to judge the company’s progress? Catalog the potential pitfalls and mark which ones would be game-changers and which would be signs of a temporary setback.