No it doesn't as long as they are both going in the same direction. Up and Up or Down and Down. 

You'll find examples of this at 0:50 of this video. 

Or more examples in the below video at timestamp 22:41

Happy to hear the practice problems have been helpful! 

We have more videos on this topic here:

Review: IUPAC, E and Z and Common Nomenclature of Alkenes

Additional Practice: Practice Problem: Labeling Geometric Isomers E or Z From Given Structure

Additional Practice: Practice Problem: Naming Alkenes and Alkene Containing Compounds

Practice Exam on Alkenes (Question 1) 

Practice Exam: Properties of Alkenes and Reactions of Alkenes (Question 1) 

Yes in this video you'll see this talked about in multiple places:

Introduction to this reaction is at timestamp 01:49

More examples are at timestamp 47:35

Yes, you'll find more examples in the below videos:

Question 10 at timestamp 14:32 in this video: Practice Exam: Structure, Bonding, Acids and Bases 

Question 5 at timestamp 6:17 in this video: Practice Exam: Acids and Bases

Timestamp 29:57 in this video: Study With Us: Ranking Acidity, Using pKa, and Drawing Arrows in Acid-Base Reactions

Yes you'll find that here:

You'll find this in the below video:

Yay! We love hearing you got it right 🎉

Recall that with a chair conformation the bulky substituents are most stable in the equatorial position. So all major conformations should have the bulky groups in the equatorial position, if they do not then they are NOT representing the conformational equilibrium. You'll find this concept explained in the below video with even more examples.

Hi Medha, at this time we don't have printable slides unfortunately it's due to copyright issues. Some past students tried to leak a lot of visuals. 

But we do have some downloads for the practice problems and exams. 

Under each Study with Us (Green thumbnails), Practice problems (blue thumbnails) and Practice exams (orange thumbnails) you'll find each pdf for that specific video.