First of all, congrats! We all know the feeling of waiting to taste the first batch and wondering what the heck is going on in there! Good choice on your first kit, we are finishing off the last 6 pack of my NB Irish red - so delicious! My advice to you is to go find some commercial examples of an Irish red to drink for a couple weeks. If you have been browsing the forum for fermentation advice, get ready for a repeat. 1. Relax. Primary fermentation takes AT LEAST a week. Sounds like you pitched well. Your yeast should rip through the sugars for the first couple days and settle down to activity you can't really see. 2. Anyone here will tell you that the only way to tell if your fermentation is done is to take regular gravity readings. That being said, don't bother until the first week is over. One of my personal philosophies is to leave the beer alone as much as possible. Every time you open it, you have potential for contamination. Usually it is not one instance of contamination that kills a beer, it is repeated introduction of the same flora (from your personal environment) that gets them. 3. I will not debate secondary vs primary-only, but can say that NB wrote the instructions, they know how to make good beer. That said, I did not secondary this beer. I have taken the practice not to use a secondary unless dry-hopping or other similar additions. One less time to introduce weird bacteria. If you don't use a secondary, you still have to wait approximately the same amount of time! I let mine stay in primary for just over a month, I didn't take a gravity reading until bottling day - the FG was right where it needed to be, I added priming sugar and bottled. 10 days later my thirst was quenched. 4. When you buy your first "beer making equipment" kit, they always give you these white plastic buckets. Of course they work fine, but don't they leave you wanting? Wondering what is happening in there? After a couple batches I tired of this feeling and bought 6.5gallon glass Carboys. Get ready to be amazed by science! (day job as a lab rat). Sure they are $50, but it will fill the hole in your heart. And you will soon realize that now you have 2 fermentation devices! 5. Lastly, if you stick with the hobby, your mind will transform from: "I like good craft beer and it is fun to make" to "I have a hobby filled with infinite tweaks I can use to make the beer I WANT to serve as MY beer".
Anyway, I am sure your first beer will be the best one you have ever had. It is for all of us. Hope you enjoy your experience.