Well, I have to admit Katyaa - you are an very patient person to still guide every single newcomer on this forum, even though they refuse to put enough effort to just read a few topics... Personally I wouldn't bother with it anymore.
Please, learn how to use "search mode". There was already a lot of similar topics here on our forum and many more on other forums.
It's not about PILLS! It's not about FAT BURNERS either!! It's all about calories deficit, good workout and cardio/HITT - depends on your stamina, in your case cardio will be a better choice.
So, please - don't buy any of those pills or fat burners, it's all just a waste of money.
We talked about it many times here and I'm surprised, that people still ask about those things.
You can try using creatine. I've used it when I was breastfeeding as well because after pregnancy my body wasn't as strong as before, so I was feeling a little fatigued during workout as well. Creatine will increase your amount of ATP in muscles, so it should also increase your stamina and you won't be feeling as tired during your workout. I can usually work out for a bit longer and more intensively when I'm taking creatine, so it should help you and will be definitely safer than drinking a lot of coffee as caffeine is an stimulant - it will make you feel more alive, but your body will be as tired as always.
Hi! Everyone has areas like this and you can't really do much about it. Of course you can try different exercises for your abdominal muscles, but
I doubt it will really help. Unfortunately, when you are losing weight you don't pick from which area you want to lose fat. It's genetic.
You have had many great responses here, so I'm sure you can manage. I can recommend trying heavy carb diet - it will be probably the easiest because as you are beginner that was never active physically, probably just like most people you were consuming mostly carbohydrates and your body is used to them. The only difference is that you should reduce any fast food carbohydrates. Focus on white rice, buckwheat groats, potatoes etc. You can also buy gainer - it's basically carbohydrates that you drink. I personally love it as often after work out I don't have a desire to eat yet, so I prepare a drink for myself and I'm supplying myself with healthy carbohydrates. Keep in my mind, that you may also have some hormones problems. If you fail to gain any weight even after applying knowledge from this forum, you should run some tests - preferably just thyroid at first. Of course you can do it even now as it's really cheap. I have a friend who is working out and he has hypothyroidism and gaining weight for him is a very hard process.
Of course he managed to put some weight by busting his a** off at the gym and in the kitchen, but if he was healthy he would do much, much better. I don't want to scare you though, but you should always look from a bigger perspective in life. I hope all is well though and you will put some fat in no time :)
You have had some great info from Katyaa here, you should definitely try new things and don't be afraid of trying them. You will never know unless you try - I have also switched a lot between different plans and after I have learned more about my body I'm basically using only two different plans and changing reps, few exercises and of course - I'm modifying my diet accordingly. Sometimes I add calories, get additional pounds and then lose them - your strength and muscle is growing so much faster when you are eating more than you actually need. Obviously it comes with extra pounds, but it's the best process for a great, constant progress. I basically divide it into two periods - "mass period" and "cutting period", which are occurring every three months, but it's not for everyone. Keeping yourself at 0 calories deficit is definitely easier approach than eating a lot and then cutting, because we all know how exhausting losing fat may be :P
Anyway, if you don't intend to change your diet, you should definitely consider changing your amount of reps. If you are doing 8-15 now, feel free to switch to 4-8 for example. It always helps me to overcome stagnation, so if you are not feeling your switch to Push and Pull feel free to modify your plan accordingly. If you are not sure on how to do it, you can post it here, give us your suggestions and we will try our best to help you :)
Good luck!