My team video was viewed a handful of times. I feel reasonably comfortable knowing it was YC because the moment I submitted, the video view count jumped.
It's like reading tea leaves though, not sure ultimately what this means.
I've never used Rosetta Stone, but it looks like a steep price tag.
Why don't you try some of the free online services to learn a language? After participating for 4-6 weeks, you will understand your own commitment level and then make the jump to invest in Rosetta Stone.
When I was learning french, it helped me when I watched TV in my own language and read the subtitles in the language I was learning. I would then do the reverse. Watch the show in the language I was learning and read the native language subtitles.
I agree with all the comments that recommend for you to wait on filing, especially since you are a single founder company.
However, if you were in a two founder situation, there might be some benefit to incorporating particularly because it would force you and your other cofounder to ask yourselves tough questions about the future.
I have a 2 cofounder situation myself, and I would like to get the legalities out of the way, but I find the fees prohibitively expensive. The best startup package (most comprehensive and from a reputable firm) I've seen was priced at $5,000 USD. $3,000 sounds like a deal, but caveat emptor.
I used to invest back in the day. Anyway, there are many investing strategies. They all have names such as Value, Growth, Event Driven, etc. I won't list them all. The investing strategy that attempts to exploit movements in stock price after an event (e.g. the type that you are asking about for the earnings announcement in the Tesla example) is called "Event Driven" investing. Another example of an "event" would be after an acquisition is announced to the public. Typically the target (one being acquired) stock will go up and the acquiror (one acquiring) will go down. Investors often try to take advantage of this trend. What is the relationship that investors are betting on if the target price always (usually) goes up, and the acquirer going down? Closing risk. At any point the acquisition, despite being publicly announced, could fall apart because of due diligence issues, etc.
Relating all that back to your question about Tesla: the fundamental value or true value of a company may or may not be reflected in a company's stock price. Think of the stock market as a manifestation of what people (investors) might believe the value is, but the reality is that the fundamentals might be vastly different. The reversion back to norm is something that happens as the market (investors who are imperfect--trust me--think AIG, Bear Stearns, Lehman) attempts to settle on true value.
Side note: Volatility in the stock price could also be attributed to a small float (not that many shares outstanding which leads to a small number of investors causing spikes in the price), but I'd have to look at Tesla's stock info to be certain.
Good luck,
Jenny