Mastery and skill development is built through exposure, so as a parent, you should carefully consider the toys you have provided to your child for appropriateness for her/his age group.
Encourage your partner to play and interact with your child. Children learn differently from how the two different genders communicate with them.
When the child does something that they have been told not to do, punishment is inappropriate as your child is still too young to link cause and effect in a very clear way. But do give them gentle but firm messages.
Even if your child is not keen on chewing keep offering them lumps and textures. Eventually s/he will learn to accept these foods.
It is your responsibility to set the standards for behaviour.
Work with your child to climb, hop, and stand on her/him on tippy toes to help strengthen motor skills, balance and coordination.
Broaden social engagement by signing up for routine playgroups and setting up play dates at your home. Start helping her/him to understand the differences between storybook characters and everyday life encounters.
Use a lot of praise for independent behaviour, e.g., getting dressed on her/his own, using the potty alone and even beginning some of the bedtime routine without help. All of these should earn the child encouragement and positive reinforcement