Assets are tangible or intangible resources or things that are controlled by an entity and posses the future economic benefits for the entity. Assets are presented in balance sheet at their book value or carrying value

The accounting equation relates assets, liabilities, and owner's equity or capital:

Assets = Liabilities + Owner's equity or capital

Examples of Assets
Securities, money orders, cherub, bank drafts buildings, vehicles, inventories, equipments, precious metals, debtors, prepaid expenses etc

Types of assets

Current assets 
Cash or easily coverable into cash within the short period of time (e.g. 3 months) for example cash, inventory, debtors, prepaid expenses etc 
Long-term investments 
Investment for more than 12 months 
Fixed assets 
Assets that will be used more than 12 months For example land, buildings, machinery, furniture, tools etc. 

Intangible assets Non-touchable assets for example patents, franchises, copyrights, trade names, goodwill, trademarks, etc. 

Tangible assets 
Touchable assets for example equipments, currencies, buildings, real estate, vehicles, inventories or stock, and metals etc.