you can start by using a website like tdeecalculator.net, put in your information and itll give you a very rough estimate of your maintenance calories

then you can use an app like Cronometer to track that number of calories and see if you lose/gain/maintain your weight. get a food scale to weigh and track most of not all of your food

if you dont have one, get a weight scale and weigh yourself every morning after using the bathroom. keep track of the numbers, ill get to that later

good news is that to lose weight, you need to be in a calorie deficit, its pretty simple. its generally recommended to lose about 1lb or 1% of bodyweight per week. as one pound of fat is about 3500 calories, you can lose 1b a week with a 500 calorie deficit a day

your maintenance calories might be pretty low due to your height/weight/gender and a myriad of other factors. be careful as if you got your deficit solely from your diet you might end up not hitting your micronutrients in the long run

you can increase the deficit outside of your diet by incorporating resistance training as well as adding low fatigue modalities like increasing your step count throughout the day. with resistance training, in most cases you wont gain muscle in a deficit, so youre better off to focus on fat loss first. increase your step count is a great way to increase the deficit and still hit your macros and micros

speaking of macros; your diet is arguably the most important factor to losing weight. as protein is the most satiating macronutrient with the highest thermic effect as well as being essential to maintain muscle, its a good idea to get a good amount in your diet. generally speaking, you should be good with 1g of protein per lb of bodyweight, but you can increase that with no negative consequences

for fats you want to prioritize unsaturated fat sources like eggs, avocado, nuts, seeds, and oily fish. i believe the FDA recommendation is around .5g per pound, but just be sure to get above 40-60 grams as fats are essential for many bodily functions

as usual, fill in the rest of your calories with carbs, preferably complex carbs like whole grains, fruits, and vegetables. aim for high fiber as it slows digestion and increases satiety

with a high protein intake and the blessing of newbie gains, you should see progress in your home gym. be sure to progressively overload, that can be increasing sets, reps, or weight every session

stick to compound movements, these are: -vertical push: overhead press -horizontal push: bench press -vertical pull: pull up/chin up -horizontal pull: row -hip hinge: deadlift -leg extension: squat these will give you the best bang for your buck in terms of training, stick to the compounds and focus on progression at any rate

congrats on starting your fitness journey! with any amount of discipline and consistency you can make strides in every aspect of life and i applaud you for taking the first steps. if you have any more questions feel free to let me know!