1) Im interested in benefit / result in long term. So I want to make my portfolio low risk. I have read here on forum different opinions like “litecoin is total ***” and that “all altcoins dont have future” and “bubble of altcoins will be destroyed”. As Im pretty newbie on which factors should I first look at? Capitalisation? Creator of coin? Technologie or protocol?
2) Would you suggest to divide my start capital in 10 parts?
If you are looking at the long term value and prefer something relatively "stable" compared to how altcoins can be, you should put your money in either BTC, or ETH. These two are the base, and while risk still exists it would be safer than putting on alts (unless you want to gamble or trust it, the later takes time for research though). All the factors you cited are importants things to look into if you get into let's say an ICO, but don't foul yourself most people are just willing to speculate and some won't even look at the tech as long as it looks promising. Try to see what others are saying but keep in mind that they can also use FOMO or FUD (terms you should be familiar with), always stay alert.
As for the division you intent to make, that's solely depending on the risk you want to take, and I probably can't make that decision for you.
3) Is it OK to buy part of bitcoin and not whole coin?
Of course, otherwise plenty of people could not afford it, before the fees and delays were that high, you could buy stuff easily at simple shops in Europe. At that time, I would not have payed 300$ a coffee
4) Is it good time to buy now coins since almost every coin is dropping in price? Should I wait now or buy after SegWit?
Although a bit disconcerting at first, seeing a coin crash might be a good thing if you intent to buy and you think it still has potential. Remember that bitcoin had a 3 year of sleep period, and look at where it's at now.
5) Can you please link other forums or websites with helpful info for exploring and learning?
https://www.ethnews.com is one, obviously centered around eth
https://coinmarketcap.com to look into numbers, graphs and markets for each coin
https://www.coindesk.com more general around cryptos
6) And some reliable websites for buying crypto from Europe and online wallets?
Kraken is pretty good for Europe with SEPA deposits and is pretty reputable.
7) If I also want to try mining should I start then with coins like litecoin and ripple?
I would not recommend it for a beginner, costs are pretty high and the reward not so much unless you have a lot of initial capital.
Which alternative is good to programm Coinigy (trading programm) ?
I personally don't have a specific program and I don't think it's necessary, especially if you are not looking into day-trading but more like passing and long-terms investments.
Hope it helped, or maybe for someone else