Aren't most altcoins forked from Litecoin nowadays rather than Bitcoin? OP's tutorial could probably be useful for someone who just wants to learn the basic ideas behind forking a coin but an equivalent tutorial for Litecoin might be more useful for most people.
No one should be forking from Litecoin in 2015. Or 2014 for that matter, but I'd give them a pass since it was so common in 2013 and before.
Litecoin is the most commonly forked coin. In fact, the word "altcoin" is almost synonymous with scrypt clones. Most of the animal coins and country coins that were released in 2014 were based on Litecoin. It's changed a bit recently now that scrypt ASICs are available and proof-of-stake systems are gaining popularity though.
Just out of curiosity but what other coin did you have in mind?
Anyway, what I've got above is mostly applicable to whatever codebase you're forking from, assuming it is ultimately something that originated with a bitcoin fork. You may have to find the respective functions living in different files with earlier versions, or they may be slightly differently structured, but adapting things is pretty straightforward.
And I haven't kept up with Litecoin; aren't they lagging behind Bitcoin in features these days? Did stealth addresses, deterministic wallets, etc, ever make it into Litecoin?
I believe there is an adaptation of Electrum for Litecoin, so yes for deterministic wallet.
Yup. It's called Electrum-LTC. It took some time to be developed (Dogecoin actually forked Electrum months before Litecoin did despite being a much newer coin) but it's available now. You can find it here:
http://electrum-ltc.org/Coblee originally intended for Litecoin to be able to easily adapt features and bug fixes from Bitcoin as they are released. That's one reason why he chose to fork Bitcoin directly rather than forking yet another altcoin.
Where do you change the mining algorithm to say qubit or something else?
The guide focuses on forking Bitcoin which uses the SHA-256 algorithm. You could try forking Qubit directly although I'm not really familiar with that particular coin. Changing a coin's hashing algorithm is probably much more difficult than creating a simple 1:1 clone so it might be beyond the scope of OP's guide.
