A startup is a new business venture that is in the process of developing a sustainable business model. Startups are often characterized by their innovation, scalability, and potential for high growth.

The process of starting a startup typically begins with an idea for a new product or service, followed by market research, prototyping, and testing. Once the business model has been validated, the startup begins to scale and grow.

One of the biggest challenges facing startups is securing funding. Many startups rely on angel investors or venture capital firms to provide the necessary capital to get their business off the ground. However, competition for funding can be fierce and many startups struggle to secure the funding they need.

Building a startup can be a challenging but rewarding task. Here are some steps you can take to build a startup:

1. Idea Generation: Start by identifying a problem or opportunity in the market that you can solve or address. Research the industry, gather data, and validate your idea through customer feedback.

2. Business Model Development: Develop a business model that outlines how your startup will generate revenue. Identify your target customers and how you will reach them, as well as your pricing strategy and distribution channels.

3. Market Research: Conduct market research to understand your target market, including their needs, pain points, and buying habits. This will help you to develop a solid marketing strategy.

4. Product Development: Develop a minimum viable product (MVP) to test your idea and validate your business model. This can be a basic version of your final product that you can use to gather feedback from customers.

5. Fundraising: Secure the necessary funding to develop your product and grow your business. This can involve seeking investments from angel investors, venture capitalists, or crowdfunding platforms.

6. Launch and Marketing: Launch your product or service and begin marketing it to your target audience. Use various marketing channels such as social media, email marketing, and content marketing to reach potential customers.

7. Scaling and Growth: As your startup grows, you will need to scale your operations, hire new employees, and continue to improve and develop your product or service.

Building a startup is a long-term process that requires a lot of hard work and dedication. Adapt to changes and be open to feedback in order to improve your product and business model. 

It's also important to surround yourself with a supportive team and network of mentors who can provide proper guidance and advice in your startup journey.