OK - not sure if this should go on another thread. If it should, please tell me

As a few of you know, this is my first cycle using OPKs. I am still waiting for them to come in the mail, but I was reading up about them last night and had a few questions.
First off, I'm using wondfos. It was unclear from Amazon if those are mid-stream or dip in a cup?
Second, it's my understanding that it's not positive until the test line is as dark or darker than the control line right? And if that's the case - what day do you usually start testing? I saw a lot of ladies taping them to a piece of paper and comparing each day - is this necessary or no? Also - do you test more than once a day?
Sorry so many questions - I want to make sure I used them right!!
Thanks in advance for yall's help!!
Ashleigh (26) and Darren (26)
Married 8-10-13
TTC since February 2014
BFP #1 4-22-14 EDD 1-1-15
8w u/s 5-22-14 Baby measuring 6w1d. Heartbeat detected
Went to Dr. 5-30-14 due to bleeding. Prescribed progesterone
Went to ER 6-1-14 2:30 AM - diagnosed with incomplete m/c
6-6-14 natural m/c completed
10-24-14 BFP #2 EDD 7-6-15 **Please** be our Rainbow


Re: OPK Question
Me: 31, DH: 30, Married July 2013
TTC since March 2014
BFP#1 5.17.14, EDD 1.26.15, MMC (measuring 6w3d at 8w3d), D&C 6.26.14
BFP#2 9.19.14, EDD 5.29.15, AF on 9.23.14 CP
BFP#3 12.17.14, EDD 8.25.15, AF on 12.21.14 CP#2
Current plan: TTC while waiting for RPL results to come back
Stalk my ute
DX Endometriosis 2/2002 (lost left tube due to a cyst), PCOS 6/2010
BFP - 10/18/2012, EDD - 6/26/2013, Baby Girl lost at 22 weeks (T21), D&E 2/15/2013
BFP - 4/23/2014, EDD - 1/2/2015 Twin Boys lost at 12 weeks, M/C 6/25/2014
My chart here All ALers welcome!
When I get off my iPad, I'll edit to add a link to a grads blog that has an excellent OPK tutorial that I think you will like.
ETA: OPK tutorial
Also, thank you for starting a new post on this! It absolutely did not need to go "inside" another post. We need to get people to quit being afraid to post new threads - especially when they are legit topics for this board.
The day the Bump died - Jasper is wise