Guys forget about Dalton for market profile. The stuff he invented is just useless. All those types of days and types of opens, etc.. It is all bullshit, it does not provide any edge to you. You just gonna waste time. If you wanna learn how to use market profile properly:
Read Peter Steidlmeyer books "Steidlmeyer On Markets" which teaches you what it is, by it´s inventor.
Read Tom Alexander´s book "Practical Applications of Market Profile", and also watch his seminar posted by gadfly I think, it is his book in video format practically. He ditched all the fluff and useless stuff invented by Dalton and kept on what works.
Watch Robin Mesch (Mesch Method) presentation teaching how to use market profile properly, you can find all this here in the forum.
When I was starting I too wasted a lot of time with Dalton stuff, it is bullshit. And he is also a bad trader, if you watch enough of his videos.