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To perform insert and select operations using Knex in a similar manner to SQL, follow these steps:

1. First, install Knex and the database driver for your database of choice (e.g. mysql, pg) by running the command npm install knex <driver> --save.

2. Create a Knex instance by initializing it with the database configuration, like this:

   const knex = require('knex')({ client: '<driver>', connection: { host: '<hostname>', user: '<username>', password: '<password>', database: '<database_name>' } }); 

3. To insert data into a table, use the insert() method:

   knex('table_name').insert({ column1: 'value1', column2: 'value2', ... }).then(function(result) { console.log('Inserted successfully'); }).catch(function(err) { console.error(err); }); 

   Replace table_name, column1, column2, etc. with your table and column names, and the respective values.

4. To select data from a table, use the select() method:

   knex.select('*').from('table_name').then(function(rows) { console.log(rows); }).catch(function(err) { console.error(err); }); 

   Replace table_name with the name of the table you want to retrieve data from.

5. You can also filter the results by using the where() method:

   knex.select('*').from('table_name').where('column_name', 'value').then(function(rows) { console.log(rows); }).catch(function(err) { console.error(err); }); 

   Replace column_name and value with the column and value you want to filter by.

6. Finally, close the Knex instance by calling knex.destroy().

These steps should help you perform insert and select operations using Knex in a similar manner to SQL.