If you do not even use Trezor for some time, let say one year or two years - what can happen then ? For example, if you do not use your laptop for one year - everything is fine. 

Yes, in July - August BTC price can be ~ 750 USD, price go up due to BTC mining difficulty. BTC buyers are more than sellers. 

There is only one most used platform for Forex, the name is Metatrader - the link is here http://www.metatrader4.com/en Even if some broker use its own platform, it is not common. Mainly all Forex brokers are using Metatrader for all transactions, you download it and use in your own computer from broker Web page.   

So fast BTC price changes mean that BTC market is not so stable, or there are some players, which buy or sale a lot. 

Current BTC price change from 450 USD to around 700 USD could origin from BTC mining difficulty. Check BTC mining difficulty from November 2015 till today and you can see all time growing. Check here: https://bitcoinwisdom.com/bitcoin/difficulty  

BTC price will not be higher than 800 USD in this week I think, BTC price changes because sell/buy market changes.   

Nowadays is simple to spend your Bitcoins - you can buy one chocolate candy at 0.3520 BTC price or let say chocolate gift set at 0.1759 BTC.  Too high prices, who will buy them ? Look here: http://chocopologie.com/collections/knipschildt-signature/products/la-madeline-au-truffle or http://chocopologie.com/collections/chocopologie/products/the-ultimate-gift-box 

Doge is then better, at least a lot of traditional users. Many websites, which use Doge and so on.  

Probably there is not so such a websites, where you cam learn trading. May be in some dice gambling chats, you can try to get this information. 

You can wait, because BTC price can go up later, not now. Let say after one month BTC price can be at 900 USD level. 

Yes, this is the true fact. First miners get a lot of bitcoins, so they are very rich now. 

Most promising project for this month is that BTC price in three weeks are from 450 USD to 750 USD, so altcoin prices are also going up. If you buy altcoin today, you can sell it after one week and get good profit. 

Most possible, than yes, BTC can be future of online gambling. BTC is very popular in various dice sites already. 

Complete BTC transaction time can be up to 24 hours and more. It is one of largest problems in using BTC. 

Bitcoin price can reach 1000 USD and even stay there. Nowadays all BTC users are happy - from 450 USD to 750 USD in three weeks time. 

If you have let say 800 BTC for investing in advertising, plus let say another 800 BTC for investing in exchanges, you can start, why not.  

Electric cars are not bad for oil industry, because currently pure electric cars are not usable due to limited mileage. Hybrid cars are much better, they save 40 - 50% of fuel, but even hybrid cars use fuel.  

The methode is simple - every day, preferable before night polish your shoes ( any colour ) with good neutral shoes wax or conditioner, ( soft cloth + a little wax or conditioner ). That's all. So you can fell like Obama in Whitehouse. For example, shoes wax or conditioners check here https://www.amazon.com/s/ref=nb_sb_noss_2?url=search-alias%3Daps&field-keywords=Shoes+wax 

It will not affect BTC, because BTC market price depend from demand - buy/sell and market is worldwide, especially USA, therefore China can not make real effect on BTC price. 

You can be sure, I never will give this methode anyone for free, because this methode can make really good money - 20 000 or even 40 000 USD in one year.