Especially at the start, be realistic with your goals. Avoid extreme diets that severely limit your options, recognizing that these plans are rarely sustainable in the long term. Don’t be too hard on yourself if you slip up from time to time, and be sure to schedule cheat meals into your diet (taking care not to let them stretch out into cheat days or weekends). In addition, instead of avoiding restaurants entirely, go and learn to seek out healthy options. Many restaurants can prepare healthier versions of their menu items when asked. For example, you could request plain grilled chicken or fish, a hefty serving of vegetables, and a side salad.
The more muscles you work, the better it is in terms of results. Working a small muscle group like your arms can get pointless pretty fast due to overtraining in the beginning. You might feel like am a bit inclined away from isolation workouts, which are an essential part of any body building routine. The problem is, not everybody needs to do it. As far as a complete beginner goes, he first needs to build a strong base in terms of strength and muscle mass before you can proceed to actual body building and the long bulking-cutting cycles.
For every person who lifts weights these days, it seems there are two who have a podcast about it. There are more bodybuilding tips promising greater strength and muscle than ever before, and along with them a ton of confusion; one buffed-up Instagrammer says lifting heavy will get you swole, while a well-known fitness personality has claimed in recent years that two 30-minute workouts per week netted him 34 pounds of muscle in a month.